| 摘要 |
<p>A main or big end bearing of an internal combustion engine, for example a large Diesel engine, comprises a supporting member (2) and an overlay (4). The overlay consists of two or more different metals or alloys (A and B) having different properties of hardness and melting point or having different crystal structures, said metals or alloys being arranged alternately one upon the other so that the overlay (4) is formed by at least three distinct material layers. A diffusion barrier layer (3) of nickel may extend on the supporting member (2). Material A may be tin-antimony; material B aluminium-tin. A sliding layer (5) is preferably of lead- or tin-based alloy. <IMAGE></p> |
